presence indicator的例句大全

The Comparative Study of the Presence Levels of Viruses and Indicator Bacteria in the Source Water and Tap Water

饮用水水源与自来水中病毒和指示细菌存在水平的比较研究

Thus the tin was released from the plating bath using 2.5 g ammonium fluoride as the releasing agent in a acetic-pyridine buffer solution of a pH value 5.5, and then inversely titrated using zinc nitrate standard solution in the presence of xylenol orange as an indicator.

在pH值为5.5的醋酸吡啶缓冲溶液中，用2.5gNH4F解蔽，4滴XO、1mLCPB指示终点，锌盐返滴定镀液中的锡。

This study reports the presence levels of viruses and indicator bacteria in the water body of East Lake and treated tap water.

本文报道了武汉东湖水和以东湖为水源的自来水中病毒和指示细菌的存在水平。

the very presence of elemental sulfur deposits on the ice in borup pass is an indicator that life is likely there.

波鲁普冰面上的单质硫沉积是一种指示，表明那里很可能有生命。

Litmus paper can be used as an indicator of the presence of acid in a solution.

石蕊试纸可用以测试溶液是否含酸.